Caster



(No Model.)

J. T 0 LEE.

(EASTER.

No. 422.552. Patented Mar. 4, 1890.

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. UNITED STATES PATENT OFFICE.

JOHN TOLER, OF NEWARK, NEW JEEsEY.

CASTER.

SPECIFICATION forming part of Letters Patent No. 422,552, dated-March 4, 1890.

Application filed November 29, 1889. Serial No. 381,939. (No model.)

To all whom it may concern:

Be it known that 1, JOHN TOLER, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Casters; and I do hereby declare the following to be a full, clear, and we act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon,which form a part of this specification.

The object of this invention is to economize time and labor in the manufacture of casters of this description, consequently reducing their cost, and produce a very strong connection of the parts.

The invention consists in the improved caster and the combination and arrangement of the various parts thereof, substantially as will be hereinafter more fully set forth, and finally embodied in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the several figures, Figure 1 is a side view of a caster, partly in section, embodying my improvement. Fig. 2 is a front view of the spindle, showing the flange, the flange being in section in position. Fig. 8 is a front View of the spindle with the flange removed, showing the recesses therein. Fig. 4 is an enlarged section through line 00, Fig. 3 5 and Fig. 5 is a section through line y.

In said drawings, a represents the spindle of a caster arranged to fit firmly in a socket in the leg or base of apiece of furniture. Near the bottom of the spindle are right angled sockets or recesses 12 b. A flange c surrounds the spindle a at its lower end, and is provided with a downward projection d. This projection flares inwardly, as shown in Figs. 1 and 2. Underneath the flange c and surrounding the spindle is arranged in the ordinary manner the bracket-arm e, carry ing the caster wheel f. At the bottom of the spindle and under the bracket-arms is a shoulder g, the construction of which forms one feature of my invention and will be here inafter explained.

In carrying out my invention a spindle of the desired length is cut from a piece of round steel wire. The square or right-angled recesses l) b are then cut in the outer periphery of the spindle at any point desired. The flange c, with its downward projection, is struck up in a die with a central opening a little smaller than the size of the spindle. This flange is then driven down over the top of the spindle with the projection part d downward until the projection reaches the annular line of recesses 17, when portions of the projection d will by the great pressure be forced outward and fill up and occupy the recesses b, firmly securing the flange in position. When properly performed, the press ure will cause the connection of the spindle and flange to be absolute, and all movement of the flange on the spindle absolutely prevented, either vertical or horizontal. The outer periphery of the flange is then placed in a clamping-jaw press and bound tightly. The bracket carrying the caster-wheel is then placed on the spindle under the flange, and is held in position thereon by an annular shoulder formed on the bottom end of the spindle by a spinning=machine under press= ure. By this process all riveting by hammer ing is avoided, as well as liability to breakage of the bracket, and a great saving of time and labor gained by. securing the bracket on the spindle by spinning a head on the spindle.

As formerly made casters of this description had a circular groove formed in the spindle, into which the projection of a flange was driven. This would not allow of the flange to be held in a vise, so as to be spun by a machine, as the flange would turn within the circular groove.

By my improved construction the rightangled recesses in the spindle, into which the projection of the flange is driven, prevent the flange from turning the spindle during the operation of spinning the head or shoul der onthe lower end of the spindle.

As heretofore constructed the flanges have been chiefly of malleable cast=iron or similar ductile material, so as to be readily bent or swaged into a circular groove in the spindle. In my improved construction I make this flange of steel by striking it up from a steel plate of the desired thickness by means of dies or formers.

Having thus described my invention, what I claim as new, and desire to secure by Letadapted and arranged to operate as described, [0 ters Patent, is and for the purposes set forth.

In a caster, the combination of a spindle a, In testimony that I claim the foregoing I provided with right-angled recesses b,a flange have hereunto set my hand this 14th day of 5 e, flange projection (l, a portion of said pro- November, 1889.

ection being adapted and arranged to enter JOHN TOLER. said recesses, and a spun head or shoulder Witnesses: adapted and arranged to secure the Wheel- CHARLES H. PELL,

bracket on the spindle, all said parts being E. L. SHERMAN. 

